drm: restore crtc origin if mode_set_base fails

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_crtc_helper.c

@@ -822,6 +822,8 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 		ret = crtc_funcs->mode_set_base(set->crtc,
 						set->x, set->y, save_set.fb);
 		if (ret != 0) {
+			set->crtc->x = save_set.x;
+			set->crtc->y = save_set.y;
 			set->crtc->fb = save_set.fb;
 			goto fail;
 		}